From generalized eigenvalue problem Kx=(lambda)Mx. This is matrix K; matrix M is BCSSTM12 from BCSSTRUC1 set.BCSSTK11, BCSSTM11, BCSSTK12 and BCSSTM12 represent the lumped and consistent mass formulation for an ore car model. In both cases the consistent mass formulations lead to non-diagonal mass matrices. The eigenvalues from the two formulations of a model should be similar, but not necessarily equal.